diff --git a/mods/default/furnace.lua b/mods/default/furnace.lua
new file mode 100644
index 00000000..d49d8efe
--- /dev/null
+++ b/mods/default/furnace.lua
@@ -0,0 +1,283 @@
+
+--
+-- Formspecs
+--
+
+local function active_formspec(fuel_percent, item_percent)
+	local formspec = 
+		"size[8,8.5]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots..
+		"list[current_name;src;2.75,0.5;1,1;]"..
+		"list[current_name;fuel;2.75,2.5;1,1;]"..
+		"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
+		(100-fuel_percent)..":default_furnace_fire_fg.png]"..
+		"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[lowpart:"..
+		(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
+		"list[current_name;dst;4.75,0.96;2,2;]"..
+		"list[current_player;main;0,4.25;8,1;]"..
+		"list[current_player;main;0,5.5;8,3;8]"..
+		default.get_hotbar_bg(0, 4.25)
+	return formspec
+end
+
+local inactive_formspec =
+	"size[8,8.5]"..
+	default.gui_bg..
+	default.gui_bg_img..
+	default.gui_slots..
+	"list[current_name;src;2.75,0.5;1,1;]"..
+	"list[current_name;fuel;2.75,2.5;1,1;]"..
+	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
+	"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
+	"list[current_name;dst;4.75,0.96;2,2;]"..
+	"list[current_player;main;0,4.25;8,1;]"..
+	"list[current_player;main;0,5.5;8,3;8]"..
+	default.get_hotbar_bg(0, 4.25)
+
+--
+-- Node callback functions that are the same for active and inactive furnace
+--
+
+local function can_dig(pos, player)
+	local meta = minetest.get_meta(pos);
+	local inv = meta:get_inventory()
+	return inv:is_empty("fuel") and inv:is_empty("dst") and inv:is_empty("src")
+end
+
+local function allow_metadata_inventory_put(pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	if listname == "fuel" then
+		if minetest.get_craft_result({method="fuel", width=1, items={stack}}).time ~= 0 then
+			if inv:is_empty("src") then
+				meta:set_string("infotext", "Furnace is empty")
+			end
+			return stack:get_count()
+		else
+			return 0
+		end
+	elseif listname == "src" then
+		return stack:get_count()
+	elseif listname == "dst" then
+		return 0
+	end
+end
+
+local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	local stack = inv:get_stack(from_list, from_index)
+	return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
+end
+
+local function allow_metadata_inventory_take(pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+	return stack:get_count()
+end
+
+--
+-- Node definitions
+--
+
+minetest.register_node("default:furnace", {
+	description = "Furnace",
+	tiles = {
+		"default_furnace_top.png", "default_furnace_bottom.png",
+		"default_furnace_side.png", "default_furnace_side.png",
+		"default_furnace_side.png", "default_furnace_front.png"
+	},
+	paramtype2 = "facedir",
+	groups = {cracky=2},
+	legacy_facedir_simple = true,
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+	
+	can_dig = can_dig,
+	
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_move = allow_metadata_inventory_move,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+})
+
+minetest.register_node("default:furnace_active", {
+	description = "Furnace",
+	tiles = {
+		"default_furnace_top.png", "default_furnace_bottom.png",
+		"default_furnace_side.png", "default_furnace_side.png",
+		"default_furnace_side.png",
+		{
+			image = "default_furnace_front_active.png",
+			backface_culling = false,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 1.5
+			},
+		}
+	},
+	paramtype2 = "facedir",
+	light_source = 8,
+	drop = "default:furnace",
+	groups = {cracky=2, not_in_creative_inventory=1},
+	legacy_facedir_simple = true,
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+	
+	can_dig = can_dig,
+	
+	aallow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_move = allow_metadata_inventory_move,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+})
+
+--
+-- ABM
+--
+
+local function swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name == name then
+		return
+	end
+	node.name = name
+	minetest.swap_node(pos, node)
+end
+
+minetest.register_abm({
+	nodenames = {"default:furnace", "default:furnace_active"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		--
+		-- Inizialize metadata
+		--
+		local meta = minetest.get_meta(pos)
+		local fuel_time = meta:get_float("fuel_time") or 0
+		local src_time = meta:get_float("src_time") or 0
+		local fuel_totaltime = meta:get_float("fuel_totaltime") or 0
+		
+		--
+		-- Inizialize inventory
+		--
+		local inv = meta:get_inventory()
+		for listname, size in pairs({
+				src = 1,
+				fuel = 1,
+				dst = 4,
+		}) do
+			if inv:get_size(listname) ~= size then
+				inv:set_size(listname, size)
+			end
+		end
+		local srclist = inv:get_list("src")
+		local fuellist = inv:get_list("fuel")
+		local dstlist = inv:get_list("dst")
+		
+		--
+		-- Cooking
+		--
+		
+		-- Check if we have cookable content
+		local cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		local cookable = true
+		
+		if cooked.time == 0 then
+			cookable = false
+		end
+		
+		-- Check if we have enough fuel to burn
+		if fuel_time < fuel_totaltime then
+			-- The furnace is currently active and has enough fuel
+			fuel_time = fuel_time + 1
+			
+			-- If there is a cookable item then check if it is ready yet
+			if cookable then
+				src_time = src_time + 1
+				if src_time >= cooked.time then
+					-- Place result in dst list if possible
+					if inv:room_for_item("dst", cooked.item) then
+						inv:add_item("dst", cooked.item)
+						inv:set_stack("src", 1, aftercooked.items[1])
+						src_time = 0
+					end
+				end
+			end
+		else
+			-- Furnace ran out of fuel
+			if cookable then
+				-- We need to get new fuel
+				local fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+				
+				if fuel.time == 0 then
+					-- No valid fuel in fuel list
+					fuel_totaltime = 0
+					fuel_time = 0
+					src_time = 0
+				else
+					-- Take fuel from fuel list
+					inv:set_stack("fuel", 1, afterfuel.items[1])
+					
+					fuel_totaltime = fuel.time
+					fuel_time = 0
+					
+				end
+			else
+				-- We don't need to get new fuel since there is no cookable item
+				fuel_totaltime = 0
+				fuel_time = 0
+				src_time = 0
+			end
+		end
+		
+		--
+		-- Update formspec, infotext and node
+		--
+		local formspec = inactive_formspec
+		local item_state = ""
+		local item_percent = 0
+		if cookable then
+			item_percent =  math.floor(src_time / cooked.time * 100)
+			item_state = item_percent .. "%"
+		else
+			if srclist[1]:is_empty() then
+				item_state = "Empty"
+			else
+				item_state = "Not cookable"
+			end
+		end
+		
+		local fuel_state = "Empty"
+		local active = "inactive "
+		if fuel_time <= fuel_totaltime and fuel_totaltime ~= 0 then
+			active = "active "
+			local fuel_percent = math.floor(fuel_time / fuel_totaltime * 100)
+			fuel_state = fuel_percent .. "%"
+			formspec = active_formspec(fuel_percent, item_percent)
+			swap_node(pos, "default:furnace_active")
+		else
+			if not fuellist[1]:is_empty() then
+				fuel_state = "0%"
+			end
+			swap_node(pos, "default:furnace")
+		end
+		
+		local infotext =  "Furnace " .. active .. "(Item: " .. item_state .. "; Fuel: " .. fuel_state .. ")"
+		
+		--
+		-- Set meta values
+		--
+		meta:set_float("fuel_totaltime", fuel_totaltime)
+		meta:set_float("fuel_time", fuel_time)
+		meta:set_float("src_time", src_time)
+		meta:set_string("formspec", formspec)
+		meta:set_string("infotext", infotext)
+	end,
+})
diff --git a/mods/default/init.lua b/mods/default/init.lua
index 7c3d077d..276af543 100644
--- a/mods/default/init.lua
+++ b/mods/default/init.lua
@@ -38,6 +38,7 @@ default.gui_suvival_form = "size[8,8.5]"..
 -- Load files
 dofile(minetest.get_modpath("default").."/functions.lua")
 dofile(minetest.get_modpath("default").."/nodes.lua")
+dofile(minetest.get_modpath("default").."/furnace.lua")
 dofile(minetest.get_modpath("default").."/tools.lua")
 dofile(minetest.get_modpath("default").."/craftitems.lua")
 dofile(minetest.get_modpath("default").."/crafting.lua")
diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index 47626e8a..3c7d4f13 100644
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -868,335 +868,6 @@ minetest.register_node("default:chest_locked", {
 	end,
 })
 
-function default.furnace_active(pos, percent, item_percent)
-    local formspec = 
-	"size[8,8.5]"..
-	default.gui_bg..
-	default.gui_bg_img..
-	default.gui_slots..
-	"list[current_name;src;2.75,0.5;1,1;]"..
-	"list[current_name;fuel;2.75,2.5;1,1;]"..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
-	(100-percent)..":default_furnace_fire_fg.png]"..
-        "image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[lowpart:"..
-        (item_percent*100)..":gui_furnace_arrow_fg.png^[transformR270]"..
-	"list[current_name;dst;4.75,0.96;2,2;]"..
-	"list[current_player;main;0,4.25;8,1;]"..
-	"list[current_player;main;0,5.5;8,3;8]"..
-	default.get_hotbar_bg(0,4.25)
-    return formspec
-  end
-
-function default.get_furnace_active_formspec(pos, percent)
-	local meta = minetest.get_meta(pos)local inv = meta:get_inventory()
-	local srclist = inv:get_list("src")
-	local cooked = nil
-	local aftercooked = nil
-	if srclist then
-		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-	end
-	local item_percent = 0
-	if cooked then
-		item_percent = meta:get_float("src_time")/cooked.time
-	end
-       
-        return default.furnace_active(pos, percent, item_percent)
-end
-
-default.furnace_inactive_formspec =
-	"size[8,8.5]"..
-	default.gui_bg..
-	default.gui_bg_img..
-	default.gui_slots..
-	"list[current_name;src;2.75,0.5;1,1;]"..
-	"list[current_name;fuel;2.75,2.5;1,1;]"..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
-	"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
-	"list[current_name;dst;4.75,0.96;2,2;]"..
-	"list[current_player;main;0,4.25;8,1;]"..
-	"list[current_player;main;0,5.5;8,3;8]"..
-	default.get_hotbar_bg(0,4.25)
-
-minetest.register_node("default:furnace", {
-	description = "Furnace",
-	tiles = {"default_furnace_top.png", "default_furnace_bottom.png", "default_furnace_side.png",
-		"default_furnace_side.png", "default_furnace_side.png", "default_furnace_front.png"},
-	paramtype2 = "facedir",
-	groups = {cracky=2},
-	legacy_facedir_simple = true,
-	is_ground_content = false,
-	sounds = default.node_sound_stone_defaults(),
-	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("formspec", default.furnace_inactive_formspec)
-		meta:set_string("infotext", "Furnace")
-		local inv = meta:get_inventory()
-		inv:set_size("fuel", 1)
-		inv:set_size("src", 1)
-		inv:set_size("dst", 4)
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.get_meta(pos);
-		local inv = meta:get_inventory()
-		if not inv:is_empty("fuel") then
-			return false
-		elseif not inv:is_empty("dst") then
-			return false
-		elseif not inv:is_empty("src") then
-			return false
-		end
-		return true
-	end,
-	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		if listname == "fuel" then
-			if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
-				if inv:is_empty("src") then
-					meta:set_string("infotext","Furnace is empty")
-				end
-				return stack:get_count()
-			else
-				return 0
-			end
-		elseif listname == "src" then
-			return stack:get_count()
-		elseif listname == "dst" then
-			return 0
-		end
-	end,
-	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		local stack = inv:get_stack(from_list, from_index)
-		if to_list == "fuel" then
-			if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
-				if inv:is_empty("src") then
-					meta:set_string("infotext","Furnace is empty")
-				end
-				return count
-			else
-				return 0
-			end
-		elseif to_list == "src" then
-			return count
-		elseif to_list == "dst" then
-			return 0
-		end
-	end,
-	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		return stack:get_count()
-	end,
-})
-
-minetest.register_node("default:furnace_active", {
-	description = "Furnace",
-	tiles = {
-		"default_furnace_top.png",
-		"default_furnace_bottom.png",
-		"default_furnace_side.png",
-		"default_furnace_side.png",
-		"default_furnace_side.png",
-		{
-			image = "default_furnace_front_active.png",
-			backface_culling = false,
-			animation = {
-				type = "vertical_frames",
-				aspect_w = 16,
-				aspect_h = 16,
-				length = 1.5
-			},
-		}
-	},
-	paramtype2 = "facedir",
-	light_source = 8,
-	drop = "default:furnace",
-	groups = {cracky=2, not_in_creative_inventory=1},
-	legacy_facedir_simple = true,
-	is_ground_content = false,
-	sounds = default.node_sound_stone_defaults(),
-	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("formspec", default.furnace_inactive_formspec)
-		meta:set_string("infotext", "Furnace");
-		local inv = meta:get_inventory()
-		inv:set_size("fuel", 1)
-		inv:set_size("src", 1)
-		inv:set_size("dst", 4)
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.get_meta(pos);
-		local inv = meta:get_inventory()
-		if not inv:is_empty("fuel") then
-			return false
-		elseif not inv:is_empty("dst") then
-			return false
-		elseif not inv:is_empty("src") then
-			return false
-		end
-		return true
-	end,
-	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		if listname == "fuel" then
-			if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
-				if inv:is_empty("src") then
-					meta:set_string("infotext","Furnace is empty")
-				end
-				return stack:get_count()
-			else
-				return 0
-			end
-		elseif listname == "src" then
-			return stack:get_count()
-		elseif listname == "dst" then
-			return 0
-		end
-	end,
-	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		local stack = inv:get_stack(from_list, from_index)
-		if to_list == "fuel" then
-			if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
-				if inv:is_empty("src") then
-					meta:set_string("infotext","Furnace is empty")
-				end
-				return count
-			else
-				return 0
-			end
-		elseif to_list == "src" then
-			return count
-		elseif to_list == "dst" then
-			return 0
-		end
-	end,
-	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-		if minetest.is_protected(pos, player:get_player_name()) then
-			return 0
-		end
-		return stack:get_count()
-	end,
-})
-
-local function swap_node(pos,name)
-	local node = minetest.get_node(pos)
-	if node.name == name then
-		return
-	end
-	node.name = name
-	minetest.swap_node(pos,node)
-end
-
-minetest.register_abm({
-	nodenames = {"default:furnace","default:furnace_active"},
-	interval = 1.0,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		local meta = minetest.get_meta(pos)
-		for i, name in ipairs({
-				"fuel_totaltime",
-				"fuel_time",
-				"src_totaltime",
-				"src_time"
-		}) do
-			if meta:get_string(name) == "" then
-				meta:set_float(name, 0.0)
-			end
-		end
-
-		local inv = meta:get_inventory()
-
-		local srclist = inv:get_list("src")
-		local cooked = nil
-		local aftercooked
-		
-		if srclist then
-			cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-		end
-		
-		local was_active = false
-		
-		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
-			was_active = true
-			meta:set_float("fuel_time", meta:get_float("fuel_time") + 1)
-			meta:set_float("src_time", meta:get_float("src_time") + 1)
-			if cooked and cooked.item and meta:get_float("src_time") >= cooked.time then
-				-- check if there's room for output in "dst" list
-				if inv:room_for_item("dst",cooked.item) then
-					-- Put result in "dst" list
-					inv:add_item("dst", cooked.item)
-					-- take stuff from "src" list
-					inv:set_stack("src", 1, aftercooked.items[1])
-				else
-					--print("Could not insert '"..cooked.item:to_string().."'")
-				end
-				meta:set_string("src_time", 0)
-			end
-		end
-		
-		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
-			local percent = math.floor(meta:get_float("fuel_time") /
-					meta:get_float("fuel_totaltime") * 100)
-			meta:set_string("infotext","Furnace active: "..percent.."%")
-			swap_node(pos,"default:furnace_active")
-			meta:set_string("formspec",default.get_furnace_active_formspec(pos, percent))
-			return
-		end
-
-		local fuel = nil
-		local afterfuel
-		local cooked = nil
-		local fuellist = inv:get_list("fuel")
-		local srclist = inv:get_list("src")
-		
-		if srclist then
-			cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-		end
-		if fuellist then
-			fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
-		end
-
-		if not fuel or fuel.time <= 0 then
-			meta:set_string("infotext","Furnace out of fuel")
-			swap_node(pos,"default:furnace")
-			meta:set_string("formspec", default.furnace_inactive_formspec)
-			return
-		end
-
-		if cooked.item:is_empty() then
-			if was_active then
-				meta:set_string("infotext","Furnace is empty")
-				swap_node(pos,"default:furnace")
-				meta:set_string("formspec", default.furnace_inactive_formspec)
-			end
-			return
-		end
-
-		meta:set_string("fuel_totaltime", fuel.time)
-		meta:set_string("fuel_time", 0)
-		
-		inv:set_stack("fuel", 1, afterfuel.items[1])
-	end,
-})
-
 minetest.register_node("default:cobble", {
 	description = "Cobblestone",
 	tiles = {"default_cobble.png"},